Crate lc

LC (LLM Client) Library

This library provides the core functionality for the LC CLI tool, including configuration management, provider handling, and chat functionality.

Platform Differences

This crate includes platform-specific features that are only available on certain operating systems:

Unix Socket Support

Unix socket functionality is only available on Unix-like systems (Linux, macOS, BSD, WSL2) and requires the unix-sockets feature to be enabled.

MCP Daemon

The MCP (Model Context Protocol) daemon functionality uses Unix domain sockets for inter-process communication and is therefore only available on Unix systems:

• Unix systems (Linux, macOS, WSL2): Full MCP daemon support with persistent connections
• Windows: MCP daemon is not supported; direct MCP connections work on all platforms

Usage Statistics

Usage statistics functionality works on all platforms (Windows, macOS, Linux, WSL2). It uses SQLite database which has full cross-platform support.

Feature Flags

• unix-sockets: Enables Unix socket functionality (default on Unix systems)
• pdf: Enables PDF processing support (default)

To build without Unix socket support:

cargo build --no-default-features --features pdf

To build with all features:

cargo build --features "unix-sockets,pdf"

Re-exports

pub use config::CachedToken;

pub use config::Config;

pub use config::ProviderConfig;

pub use provider::ChatRequest;

pub use provider::Message;

pub use provider::OpenAIClient;

Modules

chat

cli

completion

Shell completion support for the lc CLI

config

Configuration management for the lc CLI tool

database

dump_metadata

error

http_client

image_utils

input

mcp

Model Context Protocol (MCP) client implementation using the official Anthropic Rust SDK

mcp_daemon

MCP Daemon Service for persistent MCP connections across CLI invocations

model_metadata

models_cache

provider

proxy

readers

search

sync

Configuration synchronization module

template_processor

test_utils

Test utilities for managing test providers and cleanup

token_utils

unified_cache

usage_stats

vector_db

webchatproxy

Macros

debug_log

test_with_cleanup

Macro to wrap test functions with automatic setup and cleanup